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1 | #ifndef __LINUX_NET_AFUNIX_H |
2 | #define __LINUX_NET_AFUNIX_H |
3 | |
4 | #include <linux/socket.h> |
5 | #include <linux/un.h> |
6 | #include <linux/mutex.h> |
7 | #include <net/sock.h> |
8 | |
9 | extern void unix_inflight(struct file *fp); |
10 | extern void unix_notinflight(struct file *fp); |
11 | extern void unix_gc(void); |
12 | extern void wait_for_unix_gc(void); |
13 | extern struct sock *unix_get_socket(struct file *filp); |
14 | |
15 | #define UNIX_HASH_SIZE 256 |
16 | |
17 | extern unsigned int unix_tot_inflight; |
18 | |
19 | struct unix_address { |
20 | atomic_t refcnt; |
21 | int len; |
22 | unsigned hash; |
23 | struct sockaddr_un name[0]; |
24 | }; |
25 | |
26 | struct unix_skb_parms { |
27 | struct pid *pid; /* Skb credentials */ |
28 | const struct cred *cred; |
29 | struct scm_fp_list *fp; /* Passed files */ |
30 | #ifdef CONFIG_SECURITY_NETWORK |
31 | u32 secid; /* Security ID */ |
32 | #endif |
33 | }; |
34 | |
35 | #define UNIXCB(skb) (*(struct unix_skb_parms *)&((skb)->cb)) |
36 | #define UNIXSID(skb) (&UNIXCB((skb)).secid) |
37 | |
38 | #define unix_state_lock(s) spin_lock(&unix_sk(s)->lock) |
39 | #define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock) |
40 | #define unix_state_lock_nested(s) \ |
41 | spin_lock_nested(&unix_sk(s)->lock, \ |
42 | SINGLE_DEPTH_NESTING) |
43 | |
44 | /* The AF_UNIX socket */ |
45 | struct unix_sock { |
46 | /* WARNING: sk has to be the first member */ |
47 | struct sock sk; |
48 | struct unix_address *addr; |
49 | struct dentry *dentry; |
50 | struct vfsmount *mnt; |
51 | struct mutex readlock; |
52 | struct sock *peer; |
53 | struct sock *other; |
54 | struct list_head link; |
55 | atomic_long_t inflight; |
56 | spinlock_t lock; |
57 | unsigned int gc_candidate : 1; |
58 | unsigned int gc_maybe_cycle : 1; |
59 | unsigned char recursion_level; |
60 | struct socket_wq peer_wq; |
61 | }; |
62 | #define unix_sk(__sk) ((struct unix_sock *)__sk) |
63 | |
64 | #define peer_wait peer_wq.wait |
65 | |
66 | #ifdef CONFIG_SYSCTL |
67 | extern int unix_sysctl_register(struct net *net); |
68 | extern void unix_sysctl_unregister(struct net *net); |
69 | #else |
70 | static inline int unix_sysctl_register(struct net *net) { return 0; } |
71 | static inline void unix_sysctl_unregister(struct net *net) {} |
72 | #endif |
73 | #endif |
74 |
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od-2011-09-04
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v2.6.34-rc5
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